| 单词 | sidereal hour |
| 释义 | sidereal hour (once / 1477414 pages) n WORD FAMILY sidereal hour: sidereal hours USAGE EXAMPLESThe latter are divided into sidereal hours, minutes and seconds as the solar day is. Various, Encyclopaedia Britannica, 11th Edit...(2010) Add 10 sidereal hours to the sun's R.A. just found. Draper, Ernest Gallaudet, Lectures in Navigation(2010) The sun apparently moves at the rate of 15� in a solar hour; the stars at the rate of 15� in a sidereal hour. Various, Encyclopaedia Britannica, 11th Edit...(2010) n 1/24 of a sidereal day Hyper sidereal time measured by the diurnal motion of stars 60 minutes, hour, hra period of time equal to 1/24th of a day |
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